logon

Etymology
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Noun

 * 1)  credentials: the combination of a user's identification and password used to enter a computer.
 * Using the same logon for different systems can be a security risk.
 * 1)  The process of logging on.
 * The user's desktop is displayed shortly after logon.
 * The user's desktop is displayed shortly after logon.

Etymology
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Verb

 * 1) to light up, to flame